TC OF YBA2CU3O7-DELTA PREPARED FROM PURE METALS AND ONLY O-2(18)

被引：7

作者：

MATTAUSCH, H

BAUHOFER, W

SIMON, A

机构：

[1] Max-Planck-Inst fuer, Festkoerperforschung, Germany

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1988年 / 1卷 / 04期

关键词：

Ceramic Materials - Crystals - Structure - Yttrium Compounds - Electric Conductivity;

D O I：

10.1088/0953-2048/1/4/002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Samples of YBa2Cu3O7-δ prepared from pure metals and only 18O2 have a Tc (midpoint) = 91.9 K. Therefore, the isotopic substitution of 16O by 18O causes a decrease of Tc which is definitely not larger than 0.6 K. All samples used were first synthesised with 16O2. The resulting 16O was then replaced with 18O by heating in vacuum and cooling under an 18O2 atmosphere.

引用

页码：167 / 168

页数：2

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